Footage shows the Maccies worker blowing his top and attacking the customer, who was upset he couldn’t order nuggets.
The video was captured at around 4.50am today as the regular menu turned to breakfast at the Liverpool One outlet.
The employee at the centre of the footage has now been suspended, a McDonald's spokesman confirmed.
A source who captured the video said: “The fight broke out because the menu was turning to breakfast and they didn’t have any chicken nuggets.
DSBUBBLING OVER: The McDonald's employee walked around the counter after a row broke out
DSANGRY: The dispute in the Liverpool One branch was over chicken nuggets
DSOUCH: The moment the unsuspecting customer is headbutted
“Instead he wanted bacon but they didn’t have any bacon either.”
During the scuffle, the employee brutally headbutts the man who defends himself by attempting to punch him, but misses.
A woman who was trying to pull the pair off shouts "it's a f****** joke" before the video cuts off.
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“They didn’t have any chicken nuggets”Witness
Nobody intervenes to stop the scuffle, including the person filming, who follows the trio throughout the incident.
A source said: "The staff member in question was behind the counter and took a disliking to the customer.
"He had to take at least a 20 second walk around the counter to come face to face with the customer and that’s when the altercation took place.
"There was no security in sight and the guy was covered in blood.
"Me and my friends were left shaken by the event and when asked McDonald’s staff what they were going to do about it they said nothing was going to be done.”
DSANGRY: A woman tried to pull the pair apart
DSSECURITY: The customer is eventually thrown out by the disgruntled employee
A McDonald's spokesperson said: "We take matters like this extremely seriously and can confirm the individual has been suspended.
“An internal investigation is taking place as a matter of urgency.”
This is not the first row to erupt over the fast food giant’s chicken nuggets.
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Next time you go to your favourite fast food restaurant, be careful! See these gross findings from a frog in a wrap to a cockroach on a hash brown.
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A loaf of bread contained a dead mouse
Last month, two women attacked the manager of a 24-hour restaurant through a drive-thru window.
Captured on a phone by another customer, the women can be seen climbing out of the window and screaming at staff before driving off.
The pair got angry after realising they hadn’t been given all of the nuggets they ordered.
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